The direction had come after DoT said the bank had refused to comply with its order to invoke bank guarantees it had issued on behalf of Aircel, citing a stay by TDSAT.
TDSAT has issued notices to Airtel and Idea to file their responses to Jio’s impleading application and the matter will heard in its next hearing on April 17.
Aircel and its units Dishnet Wireless and Aircel Cellular have filed for bankruptcy after over four months of attempts to settle with lenders.
Experts add that the order could specifically benefit Bharti Airtel, which has also been issued a separate show cause notice by Trai on March 16.
The court will now hear the matter on April 13. It gave Telecom Regulatory Authority of India (Trai) time till March 28 to file counter-affidavits, and till April 6 to file rejoinders.
The notice sought details on the kind of tariffs Airtel has offered, when were they launched and in which circles, when were the tariffs reported to the regulator.
Indian handset players like Micromax, Lava and Karbonn have also waded into the debate, without involving ICA, saying that there should be some support or protection for local players.
One of the operational creditors, which filed to be party to the case to protect its dues of almost Rs 1,000 crore, has been allowed to lodge its claim with the resolution professional.
Micromax had contested the claims, arguing that the Swedish company was not providing its patents on socalled fair, reasonable and nondiscriminatory or FRAND terms.
Declining to identify the players to whom the notices have been issued, the TRAI said that the regulator would not like to "name and shame" the erring operators.
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